KR100943320B1 - Dust control system for vertical shaft - Google Patents

Abstract

PURPOSE: A dust control system for a vertical shaft is provided to maximize the effects of the system by producing the system inexpensively while providing environmentally friendly effects and to prevent a waste of water. CONSTITUTION: A dust control system for a vertical shaft comprises the following: a water tank(10) installed on a place higher than the vertical shaft; a surfactant storing part(20) installed around the vertical shaft; a mixing pump(40) which manufacturing a dust restricting agent; a spraying pump(50) pumping the dust restricting agent; a spraying nozzle(30) formed on the bottom of a circular pipe; a storage tank(70) supplying the dust restricting agent; a water spraying pump(90) pumping water; a plurality of water spraying nozzles(80); and a control part(60) controlling the mixing pump, the water spraying pump, and spraying pump.

Description

Shaft inlet scattering dust reduction system {Dust control system for vertical shaft}

The present invention relates to a system for suppressing dust scattering in a shaft for administering collected aggregates, wherein the dust suppressor is sprayed with the aggregates, and in some cases, water is sprayed together to prevent the dust generated during the aggregate administration operation. It is an air conservation technology that suppresses

Vertical shafts are made for different purposes in different fields. Shafts are typical of mine shafts for the development of underground deposits. In mines that collect minerals such as limestone and aggregates, which are raw materials such as cement and concrete, it is a transport route for transporting the collected minerals from the upper part of the mine to the lower part (see FIG. 1). That is, minerals such as aggregates collected from the upper part of the mine are carried in a large truck to the shaft inlet, and the shaft inlet mineral is administered, and the lower part of the shaft is shredded and transported to a factory through a separate tunnel.

Minerals, such as aggregates, are applied to the shaft by 50 to 100 tons by large trucks, so if you do not take special measures at work, a lot of dust will be generated and scattered. Article 43 (Regulation of Shattering Dust) of the Air Environment Conservation Act (Law No. 9700) is a business that generates dust directly discharged into the atmosphere (hereinafter referred to as "spray dust") without a certain discharge port. As prescribed by the Ordinance of the Environment, the city or provincial governor shall report to the city and provincial governor, and install facilities or take necessary measures to suppress the generation of scattering dust. The same applies when trying to change it. ” In addition, the standards on the installation and necessary measures to control the scattering dust generation under Article 58 (4) of the Enforcement Regulations of the Atmospheric Environment Conservation Act stipulate that water spraying facilities should be installed to suppress scattering dust generation. Of course, even if it is not the above regulations, fine dust in the range of PM10 ~ PM2.5 does not discharge outside the human body when inhaled by the human body harms the health of workers and neighboring residents, so voluntary measures are required.

In the past, a large amount of water was sprayed in the workplace in order to control the scattering dust, which causes waste of water resources by using a lot of water, and temporary dust control is possible, but dust or by-products diluted in water are moved to other places. May cause a second environmental problem.

An object of the present invention is to provide a shaft inlet scattering dust reduction system that can maximize the effect at an eco-friendly and low investment cost.

In order to solve the above problems, the present invention applies the following means.

1. Dust inhibitor

The surfactant is diluted in water to prepare a dust inhibitor. A surfactant is a substance that adheres well to an interface and significantly reduces surface tension when two materials of different nature come into contact with each other. When sprayed into an area where dust is generated, dust is trapped in the surfactant particles. Both lipophilic substances containing both a lipophilic group and a hydrophilic group in one molecule may be surfactants, and a surfactant mainly composed of diethylene glycol, ethyl alcohol, and sodium dioctyl sulfo-succinate is water. An example of the dust suppressant is a solution diluted in a volume ratio of 2000: 1. Since the surface tension of the water is reduced by the surfactant, the dust suppressor attracts dust particles even when a small amount of spray is applied, and the dust particles surround the surface of the water particles, and the aggregated dust goes to the bottom of the shaft without scattering due to its weight. I sit down.

2. Dual composition of spraying equipment and watering equipment

The present invention also provides a spraying facility for spraying the dust inhibitor. The spraying equipment may be configured to draw and mix the surfactant and water to prepare a dust suppressant and to spray the dust automatically when it detects the dust or spray by manual operation, specifically, the dust that collects and sinks the dust The inhibitor is a highly functional nozzle of STS ANTI-DROPLET TYPE, which automatically dilutes the surfactant MICELL extracted from soil microorganisms and vegetable oils that are harmless to the human body to produce mists with a water molecular size of 20 to 50㎛. Can be used.

On the other hand, the dust suppressing agent sent through the mixing pump can be temporarily stored in the storage tank, it is preferable to configure by adding a level control device that can automatically adjust the water level of the storage tank. The level control device controls to stop the mixing pump automatically so that there is no waste factor overflowing out of the storage tank when the dust inhibitor is excessively stored in the storage tank. In addition, when the dust suppressant stored in the storage tank is consumed while the spray pump is operating and the spray pump is operated in a dry state, the mixing pump is turned on when the dust suppressant in the storage tank reaches the preset minimum level to prevent a failure. Drive to control the dust containment in the storage tank.

In addition, the spraying equipment is installed on the top of the spraying facility is configured to block the scattering of the dust through the spraying work if it is difficult to block all the scattering dust only by the dust inhibitor sprayed by the spraying equipment.

When the shaft inlet scattering dust reduction system according to the present invention is installed around the shaft and shaft, it is possible to reduce the surface tension of the water and spray a dust suppressant diluted with a surfactant to collect the dust during spraying of the aggregate in the shaft. A large amount of water can be used to suppress large amounts of scattering dust. 8 is a photograph photographing and comparing the dust generation state before and after operating the shaft inlet scattering dust reduction system according to the present invention.

Meanwhile, a mixing pump for mixing water and a surfactant and a spray pump for spraying the dust suppressant in the form of a mist for manufacturing the dust suppressant may be installed to be automatically or manually driven, and a storage tank for storing the manufactured dust suppressant. There is provided a water level control device to prevent the dust suppressor from overflowing, and on the other hand, it is possible to prevent the failure of the spray pump, which may occur due to the lack of the dust suppressor.

In addition, it is possible to selectively suppress the scattering of dust in a double by installing a separate spraying equipment on the spray equipment.

The present invention provides a water tank installed on a higher ground than the shaft entrance; A surfactant reservoir installed around the shaft opening; A spray nozzle installed at an upper section of the shaft and provided with a nozzle outlet downward; A mixing pump for mixing the water supplied from the water tank with the surfactant supplied from the surfactant storage unit to prepare a dust suppressant; A spray pump for pumping the dust suppressant supplied from the mixing pump so as to spray at a high pressure through the spray nozzle; And a controller for automatically or manually controlling the driving of the mixing pump and the spray pump. It provides a shaft inlet scattering dust reduction system configured to include.

In addition, the present invention stores a dust suppressant produced through the mixing pump, the storage tank for supplying the spray pump; Shaft inlet scattering dust reduction system, characterized in that it further comprises.

In addition, the present invention stops the driving of the mixing pump when the dust suppressor stored in the storage tank reaches the set maximum level, and when the dust suppressor stored in the storage tank reaches the set minimum level in the mixing pump A level control device driven to automatically supply a dust suppressant to the storage tank; Shaft inlet scattering dust reduction system, characterized in that it further comprises.

The present invention also provides a scattering dust reduction system, characterized in that the spray nozzle is formed with a plurality of nozzle outlets in the lower portion of the annular tube, the dust inhibitor is sprayed to spread throughout the shaft.

In addition, the present invention is a spray nozzle provided with a nozzle outlet toward the shaft shaft inlet; And a sprinkling pump for pumping water supplied from the water tank to be sprayed through the sprinkling nozzle; It further includes, The control unit provides with the shaft inlet scattering dust reduction system, characterized in that configured to control the driving of the sprinkling pump together.

In addition, the present invention provides a shaft inlet scattering dust reduction system, characterized in that a plurality of spray nozzles are installed along the periphery of the shaft.

Hereinafter, with reference to the accompanying drawings will be described in detail a specific embodiment implemented the present invention.

3 is a sectional view of the shaft inlet scattering dust reduction system according to the present invention, and FIG. 4 is a plan view of the shaft inlet scattering dust reduction system according to the present invention. The shaft inlet scattering dust reduction system shown in FIGS. 3 and 4 is a facility for spraying a dust suppressant (hereinafter referred to as a 'spraying facility') and a water spraying facility (hereinafter referred to as a 'spraying facility'). ) Is provided together with the embodiment configured to perform double dust suppression.

The spraying facility is composed of a mixing pump 40, the surfactant storage unit 20, the spray pump 50 and the spray nozzle 30, the storage tank for storing the dust inhibitor produced in the mixing pump 40 70 and the water level control device 75 for adjusting the water level of the storage tank 70 can be configured to further include. On the other hand, the watering facility is composed of a watering pump 90 and the watering nozzle (80).

Surfactant is sprayed with a diluted dust inhibitor through the spraying facility, or water sprayed through the watering plant is stored in the water tank 10, the water tank 10 as shown in FIG. It is installed on a higher ground than the entrance so that there is no inconvenience in water transportation. The water tank 10 is connected to the spray pipe and the spraying facility, respectively, which is a movement path of water, and the transport pipe 2 is installed so as not to be exposed to the outside of the ground to prevent its damage. desirable.

When the spraying equipment is driven, water is first supplied from the water tank 10 to the mixing pump 40, and together with the surfactant from the surfactant storage unit 20, the surfactant is supplied to the mixing pump 40 to water the surfactant. To prepare a dust suppressant diluted in. When the mixing pump 40 is supplied with water, a predetermined amount of surfactant may be automatically introduced into the mixing pump 40 due to a pressure difference. The dust suppressant prepared in this way may be sprayed through the spray nozzle 30 by the spray pump 50 immediately, but it is preferable to separately install a storage tank 70 for storing the dust suppressant for controlling the spray amount. Do. In addition, it is possible to operate by further equipped with a water level control device 75 that can automatically adjust the level of the dust inhibitor stored in the storage tank (70). The water level adjusting device 75 automatically stops the driving of the mixing pump 40 when the dust suppressant amount reaches the highest level by presetting the highest level and the lowest level of the dust suppressant stored in the storage tank 70. When the amount of the dust suppressant reaches the minimum level, the mixing pump 40 is automatically driven to stop the dust suppressant from being supplied. Accordingly, the excessive amount of the dust inhibitor overflows the storage tank 70, or can be prevented in advance the situation that the failure as the spray pump 50 is driven in a dry state.

When the spray pump 50 is driven, the dust suppressant is supplied directly from the mixing pump 40 to the spray pump 50 or through the storage tank 70 to the spray pump 50. The spray pump 50 is driven at a high pressure to prevent a factor that impairs the durability of the spray pump 50 due to excessive pressure, a pressure regulating valve, a damper damping vibration (Damper), excessive A circulator (By-pass) or the like capable of controlling the amount of extrusion may be mounted together with the spray pump 50. The dust suppressant pumped at high pressure in the spray pump 50 is sprayed into the shaft through the spray nozzle 30. The sprayed dust suppressor mist particles are sprayed to prevent the release of fine dust and water molecules. It is preferable to make the diameter 20-50 micrometers. If the diameter of the mist particles exceeds 50㎛, even though the surface tension is weakened by the surfactant, water molecules cannot collect dust and push it out.If the diameter of the mist particles is less than 20㎛, the atmosphere is accompanied by fine dust. Because it scatters in the middle. The spray nozzle 30 has a plurality of nozzle outlet is formed in the lower portion of the annular tube (環 象管), the dust suppressor can be configured to be sprayed to spread throughout the shaft (1), it is manufactured to withstand pressure of 2000PSI or more Is preferable.

The driving of the spray facility as described above can be controlled automatically by the control unit 60 or manually according to the manual operation through the control unit 60.

On the other hand, the sprinkling equipment is a spraying nozzle (90) for pumping so that the nozzle outlet is directed toward the shaft shaft inlet and the water supplied from the water tank 10 is sprayed through the spraying nozzle (80) It consists of. The sprinkling pump 90 is to pump water supplied from the water tank 10 so that the water is sprayed quickly through the sprinkling nozzle 80, the sprinkling nozzle 80 is installed a plurality of along the periphery of the shaft For example, it can be sprayed entirely at the entrance of the shaft.

Even when the above-mentioned spraying equipment is operated, when the aggregate is dropped into the shaft 1, the descent speed of the aggregate prevents the dust suppressor mist from entering the shaft due to the dust loaded inside the shaft. However, gusts or wind from the workshop around the shaft entrance may prevent dust from entering the shaft and may be blown away by the direction of the upward airflow or the wind. Therefore, even if the spraying equipment is first installed in the upper shaft of the shaft to suppress the dust, it is preferable to block the scattering of dust by installing and driving the above-described spraying equipment above the spraying equipment. Dust suppression efficiency is increased.

In addition, the control unit 60 for controlling the dust facility can be configured to control the driving of the spraying pump 90 together, the spraying facility can be selectively driven according to the weather and dust generation conditions.

The surfactant storage unit 20, the mixing pump 40, the spray pump 50, the control unit 60, and the sprinkling pump 90 described above are provided in one operation room 100 for convenience of management. Can be promoted. When the storage tank 70 and the water level control device 75 are included in the shaft inlet scattering dust reduction system, the storage tank 70 and the water level control device 75 are also provided together in the operation room 100. can do.

Although the present invention has been described with reference to the accompanying drawings as mentioned above, various modifications and variations are possible within the scope without departing from the spirit of the present invention, and can be used in various fields. Therefore, the claims of the present invention include modifications and variations that fall within the true scope of the invention.

1 is a picture taken the shaft view.

2 is a photograph of a process of collecting aggregate from the upper part of the mine.

3 is a cross-sectional view of the shaft inlet scattering dust reduction system according to the present invention.

4 is a plan view of the shaft inlet scattering dust reduction system according to the present invention.

FIG. 5 is a schematic diagram schematically illustrating a connection state of a surfactant storage unit, a mixing pump, a spray pump, and a watering pump.

6 is a photograph of a situation in which the dust inhibitor is sprayed in the spray nozzle.

7 is a photograph of a situation in which water is sprayed from the spray nozzle.

8 is a photograph photographing and comparing the dust generation state before and after operating the shaft inlet scattering dust reduction system according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: Shaft 2: Pipe

10: water tank 20: surfactant storage unit

30: spray nozzle 40: mixing pump

50: spray pump 60: control unit

70: storage tank 75: level control device

80: water spray nozzle 90: water spray pump

100: operation room

Claims (7)

A water tank installed at a higher elevation than the shaft opening; A surfactant reservoir installed around the shaft opening; A mixing pump for mixing the water supplied from the water tank with the surfactant supplied from the surfactant storage unit to prepare a dust suppressant; A spray pump for receiving and pumping the dust inhibitor; A plurality of nozzle outlets formed in the lower part of the annular tube and configured to face downward, and installed in the upper part of the shaft, the spray nozzle configured to spray the dust suppressor pumped by the spray pump to spray the whole shaft; A sprinkling pump for pumping water supplied from the water tank; A spray nozzle configured to be installed at a plurality of positions higher than the spray nozzle along a periphery of the shaft and provided with a nozzle outlet facing the shaft inlet, and configured to spray water pumped by the spray pump; And A controller for automatically or manually controlling the driving of the mixing pump, the spray pump, and the spraying pump; Shaft inlet scattering dust reduction system comprising a. In claim 1, A storage tank for storing the dust suppressant produced through the mixing pump and supplying the spray pump; Shaft inlet scattering dust reduction system further comprises a. In claim 2, When the dust suppressor stored in the storage tank reaches the set maximum level, the driving of the mixing pump is stopped, and when the dust suppressor stored in the storage tank reaches the set minimum level, the mixing pump debris the storage tank. A level control device driven to automatically supply the inhibitor to the storage tank; Shaft inlet scattering dust reduction system further comprises a. delete delete delete In claim 1, Shaft inlet scattering dust reduction system, characterized in that the surfactant storage unit, mixing pump, spray pump, control unit and spraying pump is provided in one operation room.

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